Polymerization of hydrophobic vinyl monomers in polyvinylpyrrolidone aqueous solutions has been investigated under ultrasonic treatment. The effect of ultrasound on the destruction of water-soluble polymeric matrices has been examined. The obtaining mechanism of block- and grafted copolymers of vinyl monomers with polyvinylpyrrolidone has been proposed. The copolymers have been synthesized as films and their main properties, physico-mechanical and sorption-diffusive, in particular, have been investigated.
The use of ultrasound (US) in the preparation of pharmaceutical grade (PG) sodium chloride by the sampling of final product from a vacuum evaporator during the process of obtaining the “Extra” class table salt at the crystallization stage of the sodium chloride has been investigated. The US had been used: 1) for the content control of the base matter - sodium chloride in the stock – natural brine (sonoluminescent spectroscopy method).